Refer to the activity series chart and determine which of the following displacement reactions can occur.

a. 2ag(s) + zn(no3)2(aq) → 2agno3(aq) + zn(s)

b. 2cu(no3)2(aq) + 2ag(s) → 2agno3(aq) + cu(s)

c. cuso4(aq) + fe(s) → feso4(aq) + cu(s)

d. 3mgso4(aq) + 2al(s) → al2(so4)3(aq) + 3mg(s)

Which is the layer underground where all empty spaces are filled with a combination of air and water ?

How do forces between particles in gases compare to forces in the other states of matter? o a. the forces in gases are stronger than forces in solids but weaker than forces in liquids. o b. the forces in gases are weaker than forces in solids but stronger than forces in liquids. o c. the forces in gases are weaker than forces in solids and liquids. o d. the forces in gases are stronger than forces in solids and liquids. submit

16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.